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Finding the Fourth Proportional to 553,015.54, 762,753.98 and 417,055.22

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Solution

The fourth proportional to 553,015.54, 762,753.98 and 417,055.22 is: 575,228.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,015.54 : 762,753.98 = 417,055.22 : x
  2. Step 2: Convert to fraction form
    553,015.54/762,753.98 = 417,055.22/x
  3. Step 3: Cross multiply
    553,015.54x = 762,753.98 × 417,055.22
  4. Step 4: Simplify right side
    553,015.54x = 318,110,526,163.64
  5. Step 5: Solve for x
    x = 318,110,526,163.64/553,015.54
  6. Step 6: Final answer
    x = 575,228.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.